Abstract: This paper mainly introduces the vitrification facilities and operation of reprocessing plants in Tokai and Rokkasho, as well as the improvement measures taken in Japan in terms of vitrification facilities, operation methods and raw material components in solving the problems like blockage of outlet at bottom of furnace, and leakage of spent fuel storage pool during the current vitrification process. In future research projects, Japan will focus on developing standards for low level radioactive waste vitrification and developing advanced technologies such as cold crucible and plasma vitrification. In the same time, Japan will strengthen the research on formulas and advanced processes to achieve the capacity reduction and economy of vitrification. Japan’s experience and lessons learned are of great significance to the development of vitrification in China.

Key words: high level liquid waste, vitrification, Japan